9. Intake/exhaust system
162
How to Maintain Turbocharger
1. Cautions for engine operation
1) Observe the followings when starting, operating, a
nd
s
topping an engine.
Black and white
emissions
Deformed or damaged intake system hose Replace it
Contaminated or damaged air filter
Replace and check if the impeller of the
turbocharger is damaged
Leakage of coolant from the turbocharger or oil from
the oil hose
Replace the hose and the gasket
Poor turbo actuator operation Replace the turbocharger
Contaminated blowby gas and abnormal oil amount
Check the turbo impeller and the turbo
intake outlet
Large gap of the turbocharger wheel, causing inter-
ference with the wall
Check if there is any sand or metallic for-
eign substance
Damaged turbocharger wheel
Check if there is any sand or metallic for-
eign substance
Damaged wheel and shaft of the turbocharger
Check if there is any sand or metallic for-
eign substance
Poor rotating force of the turbocharger wheel
Check if there is any sand or metallic for-
eign substance
Blue emissions
Leakage from the engine block and the exhaust
manifold
Check the engine
Too much fog
Oil leakage to the turbine or compressor Repair or replace it
Worn or damaged seal ring due to worn bearing Repair or replace it
Too much
exhaust emis-
sions
Clogged air filter element Replace or clean it
Clogged air duct Check or repair it
Air leakage from the intake system Check or repair it
The turbocharger cannot rotate because of burning Repair or replace it
A turbine blade or compression wing contacts with
the other one or is damaged
Repair or replace it
Deformed or clogged exhaust system pipe Check or repair it
Phenomenon Causes Troubleshooting
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